Math, asked by Lazytriangle, 1 year ago

4cos square A-1=0. find a if 0<a<90

Answers

Answered by sneha41046

1

4cos^2A-1=0
4cos^2A=1
cos^2A=1/4
cosA =1/2
cosA= cos60°
A=60°

Lazytriangle: I can't

Lazytriangle: only u answered

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